A Drop of Water: Distributed by Barr Films (P.O. Box 5667, Pasadena, CA 9107); color; 12 minutes; 1970. Out of print; some prints available from publisher. (Contact Barr Films for further information.)
2.
The Periodic Table: Distributed by Media Guild (118 S. Acacia Avenue, Box 881; Solana Beach, CA 92075); color; 24 minutes;1980. Purchase, $445 (16mm) or $310 (videocassette); Rental $50.
